[Coco] Re: M.E.S.S. other 6809-based systems?
rtaylor at bayou.com
Thu Oct 30 01:38:00 EST 2003
At 08:50 PM 10/28/2003 -0900, you wrote:
>That reminds me of a machine I have, byt haven't been able to get up
>and running, A Motorola Four Phase Systems S2000. It is ratherr
>schitzo machine built on an active backplane. I/O is handled by a
>dedicate CPU on the bridge of the backplane. One side is 8-bit, and
>runs with a 6809 CPU card, and a memory card, the other side is 16-bit
>and runs witha 68010 card and a memory card. Apparently from what I
>have come to understand. It was built to be backward compatible with
>an earlier 6809 based machine which ran a real time OS which
>supposedly was a descendant of OS-9 level 1, basically extended for a
>means of paging for a greater than 64k memory space (yes, like OS-9
>Level 2, but the work was done by Motorola rather than Miroware). On
>the 16-bit side th 68010 runs a version of Unix whose entire
>filesystem is a single file on the 6809 side. In addition the
>terminals I have for the machine both operate using 6809s.
Neat. How can you load or attach software on the 6809 part of that
machine, and the terminals? I suppose if you read any EPROMs and run a
disassembler over them, then took the source and made sure it was
EDTASM-friendly, you could rewrite/alter the software for what you have.
CCASM can create ROM images from 4K to 256K, in pure format (binary).
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